3.The average number of newspapers for sale in an airport newsstand is 12, with a standard deviation of 4.

1. The average age of the pilots is 37 years, with a standard deviation of 6 years.
2. The average number of number of brands of toothpaste carried in a grocery stores was 16, with a standard deviation of 5.
3. The average number of number of length of time each grocery store was in business was 7 years, with a standard deviation of 1.6.

2.Which is more variable, by using the coefficient of variation for comparison purposes?

Newspapers, PilotsBrands of toothpaste, Number of years in business

4.Mary measures the weights of five newly hatched pythons in ounces. John converts Mary's measurements to grams. There are 28.35 grams in an ounce. Here are May's results:

Python #1 weighed 1.13oz.

Python #2 weighed 1.02oz.

Python #3 weighed 1.23oz.

Python #4 weighed 1.06oz.

Python #5 weighed 1.16oz.

Calculate the mean of Mary's measurements.

(Please write your answer to the second decimal. The testing system is not able to recognize words, so please do not write the word ounces or oz. for the answer to this question.)

5.Mary measures the weights of five newly hatched pythons in ounces. John converts Mary's measurements to grams. There are 28.35 grams in an ounce. Here are May's results:

Python #1 weighed 1.13oz.

Python #2 weighed 1.02oz.

Python #3 weighed 1.23oz.

Python #4 weighed 1.06oz.

Python #5 weighed 1.16oz.

Calculate the sample standard deviation of Mary's measurements.

(Please write your answer to the third decimal. The testing system is not able to recognize words, so please do not write the word ounces or oz. for the answer to this question.)

9.Mary measures the weights of five newly hatched pythons in ounces. John converts Mary's measurements to grams. There are 28.35 grams in an ounce. Here are May's results:

Python #1 weighed 1.13oz.

Python #2 weighed 1.02oz.

Python #3 weighed 1.23oz.

Python #4 weighed 1.06oz.

Python #5 weighed 1.16oz.

Calculate the sample variance of Mary's measurements to the fourth decimal place.

(Please write your answer to the fourth decimal. The testing system is not able to recognize words, so please do not write the word ounces or oz. for the answer to this question.)

15.___%of the population observations lie within 2.576 standard deviations on either side of the mean.

(Please write your answer as a whole number. The testing system is not able to recognize a % sign. So if you have 12% then this should be written as 12 for this question.)

21.The Chapin Social Insight Test evaluates how accurately the subject appraises other people.In the reference population used to develop the test, scores are approximately normally distributed with mean 25 and population standard deviation five.The range of possible scores is between 0 to 41.What is the probability of a score of 33 or more?(Please write your answer as a decimal. The testing system is not able to recognize a % sign. So if you have 1.23% then this should be written as .0123 which is the decimal equivalent.)